I think this is my best bet to flash the N900 without a working USB port:

> http://talk.maemo.org/showpost.php?p...&postcount=172

Where blackjack4it has managed to use the testpoints to create a new data port and flash (and later charge) his machine.

Battery charging is covered by the external charger, making the job that little bit easier.

Ideally I'd use a jig, but they must be hard to find nowadays.